Which Castle modules first?

I have a very large audio and video system, lets get that out of the way first, nearly 1 or more of every expedition module, plus some cadets and other random diy modules. Now, onto my question. I think i’d like to experiment with some Castle series modules. But which should I start with? The ADC and DAC seem obvious, but which others? And moving forward, which Castle modules are good to have multiples of?


My first two were the Shift Register and Multigate, even before I built the ADC and DAC. If you have Arch, then you already have some of the logic stuff that Multigate offers.
I have to say I’m still learning about them as I patch, but they’re very powerful!

i got castle modules even before getting a video oscillator - my first one was the shift reg soon followed by the clock vco and multigate

it was great fun to experiment with a) feedback on the multigate b) adding fun artefacts to source images with the shift register (first just vertical lines with audio oscillators but then more scanline “pixels” with video oscillators) - i still don’t have the adc dac duo and not planning on it anytime soon.

also, sometimes i found the clock vco more beautiful than the always elegant-looking (no offence intended) cadet vco

counter is fun too, it is amazing even with just one video oscillator plus when the U/D input is controlled by some gate from an audio patch (sequencer clock div, etc)

+1 on the Shift Register and Multigate. No ADC or DAC required.

Same with the Flip Flops. I really like that one because you can put RGB in and get three outputs as well (it’s sort of like a Shift Register without the shifting; though I suppose, in reality, Shift Register is a flip flop with shifting).

Also, still haven’t gotten around to building a DAC but I do have an ADC and it is actually pretty nice on its own as well. The middle bit especially creates some interesting, glitchy-looking keys.

Honestly, have been pleasantly surprised how much I find myself using the Castles. They’re great!

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One cool thing about the DAC is it is just two weighted analog mixers, so you can use it for quick fixed-attenuation summing two video signals and an LFO or something. It also uses only one LM6172 chip!

Love all the Castles, the Counter is a favorite. I feel like they all benefit from double or even triple modules, I have 2x of most of them but find myself wanting more logic and counters/shift registers. Would love to daisy-chain 2 or 3 shift registers and experiment with some nonlinear feedback shift registers or other more complex logic circuits.

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indeed, that is why i am planning on a dac too - really good for the digital outs but other signals as well - and yes, would love to see another shift reg which is differently clocked indeed - (Fortress looks also like a masterpiece for me, but in the end i really love the learning ethos or curve of the cadet/castle modules too.)

in my experience a 4x dac 3x adc setup is very nice. (note that the dac is already dual, so 4x dac = 2 modules)
You can layer the several ADC patterns with offset, so that you get even more complex stepped grayscales from the dac. With a camera feedback as input this will become very interesting because the base signal is wobbly and dynamic.
here are some pics from a 4xdac 2xadc liveset (with feedback)

I also really like the logic castle (multigates), you can slice and dice video signals .

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I have multiples of flip flops, counter and shift Reg. All great fun.

Good discussion here guys, thanks! It just makes me want all of them. lol I settled on the Clock VCO, Counter and Shift Register for now.

I you want to do the basic “pixelate my source” patch you want that flip flops

Don’t worry, it’ll be in the next batch I pick up. I’ve been trying to slim down my pile of backlogged projects, so 3 at a time is enough for now. My case still has holes to fill after those 3.